Improvement in harrows



A. O. STIVESON.

HARROW.

Patnted Jan.2,187'7.

l l i UNITED STATES PATENT OFFI.

ANTHONY STIVESON, OF APOLLO, ASSIGNOR OF ONE-HALF OF HIS RIGHT TO JOSHUACOOPER, OF SPRING CHURCH, PENNSYLVANIA.

IMPROVEMENT IN HARROWS.

Specification forming part of Letters Patent No. 186,982, dated January2, 1877; application filed November 27, 1876.

To all whom it may concern:

Be it known that I, ANTHONY O. STIvEsoN, of Apollo, in the county ofArmstrong and State of Pennsylvania, have invented certain new anduseful Improvements in Harrows; and I do hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it pertains to make and useit, reference being bad to the accompanying drawings, which form part ofthis specification, in Which- Figure 1 is a plan view. Fig. 2 is avertical section on line a: a.

This invention relates to improvements in rotary barrows; and consistsin the construction and arrangement of parts, substantially ashereinafter fully described and claimed.

The frame of the harrow is made up of four beams, a b, joined at theirends to form a hollow square, one corner forming the front of thebarrow, and the opposite corner the rear, beams on inclosing the front,and beams b the rear. Beams a and b are armed with teeth so disposedthat those in front will register between those in the rear, and thusthe rear teeth will break up the soil that passes between the frontteeth. Across the corners of the frame are set braces c, to strengthenthe frame and make it rigid. Resting upon the braces 0, and extendingdiagonally across the frame, are beams at, meeting at the center of theframe. Attached to the cross-beam d, and supported by standards from therear brace c, is a pair of handles for the guidance of the burrow. Atthe center of beams d a hole is bored, lying in the lateral verticalplane, but out of the longitudinal vertical plane. Extending up throughthis'as a hearing is a kingbolt, supporting on itself as pivot arotating frame, also armed with teeth, and composed of two arms, m n,crossed at right angles, strengthened by means of a ringbrace, e, andheld downwardly at distance by means of a spider, '5, extending from thebeams 01, and forming a bearing, against which the rotating frame isguided in its proper eccentric plane of rotation.

The operation is as follows: The barrow being drawn forward, the teethon the front a of the inelosing frame first break the clods in thedirection of the line of motion of the whole barrow. But the rotatingframe inside performs a distinct operation, which is, that the armsforward of the center break across the line of motion in one direction,and those rear of the center in the opposite direction, and over thesame soil, so that thus far we have, practically, three passes on thesame portions of the soil. Now, the rear, b, of the inclosing framecomes along, and again breaks up the soil in the direction of motion asat first, thus giving four passes. If the driver see a stone, stump, orother immovable obstacle in his way, he need not drive around it, but,instead, so guides the barrow as to allow the object to pass between twoteeth of the forward frame a, then between the arms of the centralrotating frame, after the manner of a turnstile, while this frame willat the same time break up the clods about the obstacle. Thus, in goingover the land but once and in one direction, it is harrowed to the sameextent as it passed over four times in as many directions by the oldstyle of harrow.

The construction is compact, simple, and very effective in withstandingshocks of all kinds, while the operation is easy and the work isthoroughly done.

Having thus described my invention, I claim- In combination with theframes at b, the corner-braces c and diagonal beams (1, meeting at theircenter, the end of one of the beams 01 constituting the draft-bar of thewhole, substantially as described.

In testimony that I claim the foregoing I have hereunto set my hand this11th day of November, 1876.

ANTHONY O. STIVESON.

Witnesses JOSHUA (JooPER, ALBAN F. DIMOND-

